PressureKilopascals to Psi

Kilopascals to Pounds per Square Inch

Snapshot

1 Kilopascal equals 0.145038 Pounds per Square Inch. Conversion Encyclopedia uses the same fixed conversion basis across the calculator, common values, and reverse page for this page.

Reference basis: This conversion uses exact pascal-based pressure definitions.
Example: For 5 Kilopascals, the result equals 0.725189 Pounds per Square Inch.
Use the reverse page if you need the opposite direction with the same basis.

Use the interactive calculator below for custom values and the common-value table for quick checks.

Interactive conversion

Converter Calculator

0.145038 Pounds per Square Inch (psi)

Switch

Machine access

Available to apps and AI agents

Kilopascals to Pounds per Square Inch can be requested through Conversion Encyclopedia's structured interfaces by software and compatible AI agents. The identifiers below select the same calculation as the calculator.

Machine-readable identifiers

Conversion family: pressure
Source unit: kilopascals
Target unit: psi

The JSON API and OpenAPI specification use the identifiers to reach the conversion engine. WebMCP lets compatible AI agents request the same calculation.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "pressure",
  "value": 1,
  "from": "kilopascals",
  "to": "psi"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "pressure",
    "value": 1,
    "from": "kilopascals",
    "to": "psi",
    "result": {
      "raw": 0.14503773773021683,
      "display": "0.145038"
    },
    "canonicalPath": "/pressure/kilopascals-to-psi/"
  }
}

Full API documentation

Explanation

Formula: Pounds per Square Inch = Kilopascals × 0.145038. Why: this is a cross-system pressure conversion. The calculator normalizes the value through pascals, then applies the exact target-unit constant for consistent engineering and reference use.

Kilopascals (kPa): a pressure unit equal to 1,000 pascals, widely used in engineering, weather, and industrial specifications.

Pounds per square inch (psi): an imperial pressure unit widely used in tires, hydraulics, compressed gas systems, and general mechanical work.

This route is useful when translating pressure values across SI, metric engineering, and imperial conventions so datasheets, gauges, and calculations stay comparable.

This conversion is purely multiplicative because both units reduce through pascals using fixed pressure constants with no offset.

Method & Reference

Method basis: exact conversion formula shown in Snapshot.
Applied factor: 1 Kilopascal = 0.145038 Pounds per Square Inch (using exact pascal-based pressure definitions).
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Kilopascals (kPa)	Pounds per Square Inch (psi)
1	0.145038
5	0.725189
10	1.450377
30	4.351132
32	4.641208
35	5.076321
100	14.503774
200	29.007548
220	31.908302
300	43.511321

Questions & answers

Frequently Asked Questions

What is 1 kilopascal in pounds per square inch?

1 Kilopascal equals 0.145038 Pounds per Square Inch on this page.

Does this Kilopascals to Pounds per Square Inch page use fixed pascal equivalents for psi or mmHg?

Yes. Psi and mmHg use fixed pascal equivalents on this page, so gauge, vacuum, and instrumentation values stay consistent across the direct answer, calculator, and table.

When would I convert kilopascals to pounds per square inch?